Energy & Fuels最新文献

{"title":"Ternary Co0.4Fe1.6P Catalysts for Efficient Electrolysis of Water","authors":"Shengke Tang,&nbsp;Xiang Wu* and Yoshio Bando*,&nbsp;","doi":"10.1021/acs.energyfuels.4c0453410.1021/acs.energyfuels.4c04534","DOIUrl":"https://doi.org/10.1021/acs.energyfuels.4c04534https://doi.org/10.1021/acs.energyfuels.4c04534","url":null,"abstract":"<p >In recent years, transition metal phosphides as electrocatalysts are the research hotspot due to their low cost and high electrical conductivity. However, their applications are largely restricted by their low conversion efficiency and sluggish reaction kinetics. Herein, we report several kinds of flower-like Co_0.4Fe_1.6P catalysts through a facile hydrothermal approach and subsequent phosphating process. The as-prepared materials possess sufficient catalytic sites to facilitate ion transfer. The Co_0.4Fe_1.6P-2 electrode presents an overpotential of 244 mV@50 mA cm^–2 for oxygen evolution reaction (OER) and 96 mV@10 mA cm^–2 for hydrogen evolution reaction (HER). Moreover, the assembled two-electrode system presents a voltage of 1.66 V at the current density of 50 mA cm^–2.</p>","PeriodicalId":35,"journal":{"name":"Energy & Fuels","volume":"38 23","pages":"23083–23090 23083–23090"},"PeriodicalIF":5.2,"publicationDate":"2024-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142850948","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Visualization of Shale Oil Occurrence Characteristics and Analysis of Main Controlling Factors Within Microdomains: Insights from Raman Mapping Combined with AFM","authors":"Lidan Jia,&nbsp;Zhiye Gao*,&nbsp;Guowei Zheng,&nbsp;Zhi Yang*,&nbsp;Zi-Bo Li,&nbsp;Zhenxue Jiang,&nbsp;Weihang Wei,&nbsp;Guoming Ma,&nbsp;Lulu Zhang,&nbsp;Haotian Xin,&nbsp;Zhaochen Liu,&nbsp;Lixun Bai and Adou Yang,&nbsp;","doi":"10.1021/acs.energyfuels.4c0409410.1021/acs.energyfuels.4c04094","DOIUrl":"https://doi.org/10.1021/acs.energyfuels.4c04094https://doi.org/10.1021/acs.energyfuels.4c04094","url":null,"abstract":"<p >It is of great significance to visually investigate the occurrence characteristics and controlled factors of shale oil within microdomains to determine its migration and production. However, a significant gap exists in visually investigating the intricate interplay between shale oil, mineral composition and pore structure, which has hindered shale oil production. To address this gap, this study used Raman mapping to intuitively analyze the occurrence characteristics of shale oil and applied Raman mapping combined with atomic force microscopy (AFM) to investigate the interrelationship between shale oil occurrence characteristics, mineral compositions and pore structure of the Permian Fengcheng Formation in the Mahu Sag of the Junggar Basin. The results show that the occurrence of shale oil can be divided into four types. More specifically, microdomains with high total organic carbon (TOC) content and developed pores are most favorable for shale oil occurrence, whereas microdomains with high TOC content and migration pathways are relatively unfavorable. Microdomains with high TOC content and undeveloped pores are unfavorable for shale oil occurrence, whereas microdomains with low TOC content and undeveloped pores are the most unfavorable. The shale oil content was positively correlated with the carbonate, feldspar, pyrite, and reedmergnerite contents. Conversely, the shale oil content was negatively correlated with the quartz content. Furthermore, the AFM phase peaks at the interiors of the elliptical- and slit-shaped pores positively shifted by 11.1% and 54.4% more than at the interface, respectively. The interiors of slit- and elliptical-shaped pores always showed a higher shale oil Raman signal than the exteriors of these pores, both of which indicate that these two types of pores are favorable for shale oil occurrence. These findings improve our understanding of the key factors influencing the oil-bearing properties and occurrence characteristics of shale oil within microdomains and provide a new analytical perspective for the effective exploitation of shale oil.</p>","PeriodicalId":35,"journal":{"name":"Energy & Fuels","volume":"38 23","pages":"22833–22847 22833–22847"},"PeriodicalIF":5.2,"publicationDate":"2024-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142843296","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Influence of Coal Stress Sensitivity on the Desorption Production Characteristics and Residual CH4 Distribution of Thin Multilayered Coal Seams","authors":"Jianlong Xiong,&nbsp;Zhijun Zhang*,&nbsp;Qian Wang,&nbsp;Jian Shen,&nbsp;Paul W.J. Glover,&nbsp;Piroska Lorinczi,&nbsp;Jun Zhang and Siliang Zheng,&nbsp;","doi":"10.1021/acs.energyfuels.4c0387210.1021/acs.energyfuels.4c03872","DOIUrl":"https://doi.org/10.1021/acs.energyfuels.4c03872https://doi.org/10.1021/acs.energyfuels.4c03872","url":null,"abstract":"<p >Multilayer codevelopment technology can significantly enhance the efficiency of coalbed methane (CBM) production in multilayer thin coal seams. When facing multiple coal seams with low permeability and large differences in permeability between layers, investigating the impact of permeability and its stress sensitivity on the desorption and production patterns of methane (CH₄) is fundamental to the implementation of multilayer codevelopment techniques. Permeability stress sensitivity tests on coal cores, CH₄ desorption production experiments, and quantitative analysis of CH₄ distribution in coal were conducted on coal samples with varying permeabilities in order to identify an optimal pressure drawdown approach that mitigates the adverse effects of permeability differences on multilayer codevelopment. Experimental findings indicate that a significant shift in permeability ratios among coal seams is observed, from 1:18.9:5.4 to 1:43.1:10.8, which exacerbates interlayer differences, which occurs as reservoir pressure decreases to the abandonment. The linear pressure decline method is found to be effective in enhancing CH₄ recovery, particularly in low-permeability coal, with a high recovery rate of 71.6%. This method outperforms both stepwise and direct pressure decline methods, which achieve recovery rates of 67.5% and 54.7%, respectively. The study also reveals that high-permeability coal exhibits 4.8–9.5% higher CH₄ recovery rates than that of low-permeability coal with a linear decrease in pressure. The high-permeability coal also reaches the peak CH₄ production rate earlier and maintains it for a longer period. The higher adsorbed CH₄ recovery rates and more uniform distribution of residual adsorbed CH₄ in high-permeability coal suggest that CH₄ in micropores is more readily desorbed. The study underscores the importance of reasonable bottom hole flowing pressure control for optimizing multilayer codevelopment and provides a scientific basis for the effective development of CBM in the region.</p>","PeriodicalId":35,"journal":{"name":"Energy & Fuels","volume":"38 23","pages":"22820–22832 22820–22832"},"PeriodicalIF":5.2,"publicationDate":"2024-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142843295","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Mono- vs Tri-nuclear Silver(I) and Gold(I) N-Heterocyclic Carbene Complexes/Metallacycles as Free-Standing Carbon Cloth Electrodes for Hydrogen Evolution Reaction in Alkaline Medium","authors":"Zhoveta Yhobu,&nbsp;Mayur Jagdishbhai Patel,&nbsp;Jan Grzegorz Małecki,&nbsp;Doddahalli H. Nagaraju and Srinivasa Budagumpi*,&nbsp;","doi":"10.1021/acs.energyfuels.4c0410310.1021/acs.energyfuels.4c04103","DOIUrl":"https://doi.org/10.1021/acs.energyfuels.4c04103https://doi.org/10.1021/acs.energyfuels.4c04103","url":null,"abstract":"<p >The synthesis of a Au(I) chlorido mono-carbene complex (<b>AuLCl</b>), a tri-nuclear Ag(I) tri-carbene metallacycle (<b>Ag</b>_<b>3</b><b>L</b>_<b>3</b><b>·3PF</b>_<b>6</b>), and a tri-nuclear Au(I) tri-carbene metallacycle (<b>Au</b>_<b>3</b><b>L</b>_<b>3</b><b>·3PF</b>_<b>6</b>) via direct or transmetalation route has been reported. The new metal <i>N</i>-heterocyclic carbene (NHC) complexes are thoroughly characterized by ¹H, ¹³C NMR, and single crystal X-ray diffraction (SCXRD) technique. The molecular structure analysis of <b>AuLCl</b> and <b>Au</b>_<b>3</b><b>L</b>_<b>3</b><b>·3PF</b>_<b>6</b> reveals that both these complexes crystallize in a monoclinic crystal system and possess a linear coordination geometry. The metal NHC complexes are fabricated as free-standing carbon cloth (CC) electrodes using a simple dip-coating and drying method. The deposition of the metal NHC complexes on the CC is investigated by field emission scanning electron microscopy (FE-SEM), and it is found that they are deposited as distinct, fine microgranules with varying sizes and shapes. The free-standing CC electrodes of metal NHC complexes (<b>AuLCl</b>, <b>Ag</b>_<b>3</b><b>L</b>_<b>3</b><b>·3PF</b>_<b>6</b>, and <b>Au</b>_<b>3</b><b>L</b>_<b>3</b><b>·3PF</b>_<b>6</b>) are studied for their potential in the electrochemical hydrogen evolution reaction (HER) in an alkaline medium. The activity of the metal NHC complex CC electrodes is enhanced by incorporating conductive carbon ink in the electrode fabrication to develop complex-carbon electrodes (<b>AuLCl/C</b>, <b>Ag</b>_<b>3</b><b>L</b>_<b>3</b><b>·3PF</b>_<b>6</b><b>/C</b>, and <b>Au</b>_<b>3</b><b>L</b>_<b>3</b><b>·3PF</b>_<b>6</b><b>/C</b>). Among the fabricated free-standing CC electrodes, <b>Ag</b>_<b>3</b><b>L</b>_<b>3</b><b>·3PF</b>_<b>6</b><b>/C</b> exhibits the best HER activity with an overpotential of 187 mV vs RHE to reach a current density of 10 mA/cm² with a Tafel slope value of 169 mV/dec and charge transfer resistance (<i>R</i>_ct) value of 9.85 Ω. <b>Ag</b>_<b>3</b><b>L</b>_<b>3</b><b>·3PF</b>_<b>6</b><b>/C</b> is investigated for its long-term operational stability for 24 h using the chronoamperometric technique and exhibited significant current retention. The integrity of the <b>Ag</b>_<b>3</b><b>L</b>_<b>3</b><b>·3PF</b>_<b>6</b><b>/C</b> CC electrode after the long-term operational stability analysis is investigated by FE-SEM, exhibiting the robust and stable nature of the metallacycle-carbon composite electrode.</p>","PeriodicalId":35,"journal":{"name":"Energy & Fuels","volume":"38 23","pages":"23058–23067 23058–23067"},"PeriodicalIF":5.2,"publicationDate":"2024-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142843216","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Review of Sustainable Hydrogen Energy Processes: Production, Storage, Transportation, and Color-Coded Classifications","authors":"Mohammed El-Adawy*,&nbsp;Ibrahim B. Dalha,&nbsp;Mhadi A. Ismael,&nbsp;Zeyad Amin Al-Absi and Medhat A. Nemitallah,&nbsp;","doi":"10.1021/acs.energyfuels.4c0431710.1021/acs.energyfuels.4c04317","DOIUrl":"https://doi.org/10.1021/acs.energyfuels.4c04317https://doi.org/10.1021/acs.energyfuels.4c04317","url":null,"abstract":"<p >Rapid urbanization and population growth have intensified global energy demand, with fossil fuel consumption aggravating air pollution and climate change. Hydrogen, a clean energy carrier, is essential for transitioning to a low-carbon economy. This study examines the color-coded classification of hydrogen production pathways, derived from both renewable and non-renewable sources, and examines their emission profiles. Additionally, it delves into the critical aspects of hydrogen storage and transportation, highlighting the need for robust infrastructure to ensure the effective integration of hydrogen into the energy system. The study concludes that traditional hydrogen production methods, such as coal gasification and steam methane reforming (SMR), significantly contribute to air pollution due to their reliance on fossil fuels and lack of carbon capture. While blue hydrogen, utilizing carbon capture and storage (CCS), offers a reduction in greenhouse gas (GHG) emissions, turquoise and green hydrogen, produced via methane pyrolysis and water electrolysis, respectively, present cleaner alternatives with zero GHG emissions. With regard to hydrogen storage, metal and complex hydrides emerge as cost-effective options, while compressed hydrogen is suitable for large-scale storage. For applications demanding high energy density, liquefied and cryo-compressed hydrogen are viable, despite their associated costs and complexities. For hydrogen transportation, pressurized tanks, cryogenic liquid hydrogen tankers, and gas pipelines are considered. Pipelines are favored for long-distance transportation due to their cost-effectiveness, while cryogenic liquid hydrogen tankers are preferred for short distances, despite higher costs and infrastructure requirements.</p>","PeriodicalId":35,"journal":{"name":"Energy & Fuels","volume":"38 23","pages":"22686–22718 22686–22718"},"PeriodicalIF":5.2,"publicationDate":"2024-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142843289","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Insight into the Key Role of Yttrium Modification for the Enhanced Hydrothermal Stability over Y-Cu-SSZ-39 Zeolite Catalysts","authors":"Mingli Li,&nbsp;Yuanyuan Yang,&nbsp;Yunbin Xia,&nbsp;Xi Feng*,&nbsp;Ziyue Lan,&nbsp;Ganxue Wu*,&nbsp;Xiaojing Wang,&nbsp;Hong Xiao,&nbsp;Yinghao Chu and Yaoqiang Chen,&nbsp;","doi":"10.1021/acs.energyfuels.4c0402210.1021/acs.energyfuels.4c04022","DOIUrl":"https://doi.org/10.1021/acs.energyfuels.4c04022https://doi.org/10.1021/acs.energyfuels.4c04022","url":null,"abstract":"<p >Cu-SSZ-39 represents one of the most promising diesel selective catalytic reduction (SCR) catalysts, but it has remained challenging to gain superior low-temperature catalytic activity and hydrothermal stability for meeting the stringent diesel emission regulations. In this study, a diesel NO_<i>x</i> purification catalyst with excellent low temperature catalytic activity and outstanding hydrothermal stability was synthesized. It was found that the denitration activity of fresh samples increased with increasing Y content throughout the temperature interval, while it decreased when the Y content exceeded 0.25%. Y modification can increase the proportion of ZCuOH (singly coordinated with an isolated Al atom) in 8MRs and strong Lewis acid sites, resulting in a significant better low temperature NO_<i>x</i> reduction activity. The moderate amount of Y ions on the ion-exchange sites can well stabilize the framework of SSZ-39, which results in an enhancement effect on hydrothermal stability. Mechanism studies reveal that the interplay between Y and Cu not only enhances the electron transfer ability from Cu to Y ions but also inhibits the aggregation of Cu sites. This work may pave a new way for the next generation of advanced diesel NH₃-SCR catalysts.</p>","PeriodicalId":35,"journal":{"name":"Energy & Fuels","volume":"38 23","pages":"23043–23057 23043–23057"},"PeriodicalIF":5.2,"publicationDate":"2024-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142850448","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Asphaltene Deposition Inhibitors in CO2 Flooding: A Review and Future Application Prospects","authors":"Shuangchun Yang,&nbsp;Hao Wang,&nbsp;Xu Lou,&nbsp;Yi Pan*,&nbsp;Zhiyong Hu* and Yulin Yan,&nbsp;","doi":"10.1021/acs.energyfuels.4c0325910.1021/acs.energyfuels.4c03259","DOIUrl":"https://doi.org/10.1021/acs.energyfuels.4c03259https://doi.org/10.1021/acs.energyfuels.4c03259","url":null,"abstract":"<p >Chemical inhibitors are crucial in addressing asphaltene issues during CO₂ flooding, enhancing oil recovery. These inhibitors chemically modify asphaltene aggregation and deposition, typically featuring functional groups that interact with asphaltene molecules to improve their solvency and dispersion. The problem of asphaltene deposition is a global issue, hindering the extraction and processing of petroleum, making the research on chemical inhibitors for asphaltene deposition crucial. However, due to concerns over the stability, cost, and environmental impact of the inhibitors, it is mainly still at the laboratory stage. Currently, there are few studies on the summary of asphaltene deposition inhibitors. This review analyzes asphaltene deposition mechanisms, their impact on reservoirs, and various types of inhibitors, such as natural organics, surface-active agents, ionic liquids, and nanoparticles. It also fills the gaps in existing research. We not only analyzed the chemical properties and mechanisms of action of these inhibitors but also explored their potential applications and effects under actual oilfield conditions. Furthermore, this review also proposes that future research should focus on evaluating the performance of these novel inhibitors under a broader range of industrial conditions and their long-term impact on the environment, to achieve optimal economic benefits and environmental sustainability. Through these studies, we hope to provide more efficient and environmentally friendly asphaltene solutions for the petroleum industry, thereby promoting scientific and technological progress and industrial development in this field.</p>","PeriodicalId":35,"journal":{"name":"Energy & Fuels","volume":"38 23","pages":"22616–22636 22616–22636"},"PeriodicalIF":5.2,"publicationDate":"2024-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142843290","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Rheology, Phase Stability, and Microstructure of Nanosilica-Assisted Partially Hydrolyzed Polyacrylamide","authors":"Yuzhou Zhao,&nbsp;Gideon Dordzie,&nbsp;Chun Huh,&nbsp;Matthew Balhoff and Yingda Lu*,&nbsp;","doi":"10.1021/acs.energyfuels.4c0420910.1021/acs.energyfuels.4c04209","DOIUrl":"https://doi.org/10.1021/acs.energyfuels.4c04209https://doi.org/10.1021/acs.energyfuels.4c04209","url":null,"abstract":"<p >Partially hydrolyzed polyacrylamide (HPAM) is widely used for chemical enhanced oil recovery but its performance can be greatly reduced under harsh reservoir conditions. One proposed method of improving the performance of polymer flooding under reservoir conditions is the addition of functionalized nanoparticles (NPs). In this study, we systematically investigated the effects of adding hydrophobic or hydrophilic silica nanoparticles on the rheology, phase stability, and microstructure of HPAM solutions. Adding low concentrations of NPs slightly reduces the viscosity of the solutions but the presence of a high quantity of NPs (&gt;0.5 wt %) makes the solution more viscous, elastic, and shear thinning. The results of dynamic light scattering reveal that these effects are mainly caused by the reversible formation of a large HPAM-NP network, which consists of HPAM chains weakly connected by NPs. When kept under static conditions, the NP-HPAM mixtures tend to undergo phase separation in a few days, but this issue is less likely to be a concern in field-scale polymer flooding during which the fluids are under constant flow. The findings of this study provide potential solutions to improve the performance of polymer flooding under high-salinity reservoir conditions.</p>","PeriodicalId":35,"journal":{"name":"Energy & Fuels","volume":"38 23","pages":"22775–22786 22775–22786"},"PeriodicalIF":5.2,"publicationDate":"2024-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142850459","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of Ionic Composition on Methane Hydrate Formation Kinetics in Natural and Artificial Deep-Sea Seawater","authors":"Yue Zhang,&nbsp;Jing-Chun Feng*,&nbsp;Yuhang Zhang,&nbsp;Bin Wang,&nbsp;Jinyi Liu,&nbsp;Yi Wang and Si Zhang,&nbsp;","doi":"10.1021/acs.energyfuels.4c0433110.1021/acs.energyfuels.4c04331","DOIUrl":"https://doi.org/10.1021/acs.energyfuels.4c04331https://doi.org/10.1021/acs.energyfuels.4c04331","url":null,"abstract":"<p >On the cold seep seafloor, methane hydrate is an important form of carbon storage. The stability of methane hydrates and mechanisms of ionic effects on hydrates are closely related to seafloor methane release and carbon cycling. Cold seeps are endowed with abundant and high-quality hydrate resources under the environmental conditions of low temperatures and high pressures. Methane hydrates are seen as a potential source of renewable energy and a possible form of energy storage, as the global demand for clean energy increases. Although studies have focused on the formation and dissociation processes of methane hydrates, the influence of seawater ions on the kinetics of hydrate formation is still unclear. In this study, we studied the formation kinetics of methane hydrate in ion systems, analyzed the effects of various main ions, and compared them with in situ seawater composition. The phase equilibrium point of methane hydrate in the in situ seawater system was experimentally determined by us to better understand the stability. The degree of inhibition on the methane hydrate formation kinetics in natural seawater is more closely to that of CaCl₂, MgCl₂, and SrCl₂, as indicated by gas consumption during methane hydrate formation. However, NaCl exhibits a greater inhibition effect than that of CaCl₂, MgCl₂, and SrCl₂. The thermodynamic behavior of in situ seawater is consistent with the inhibition degree of SrCl₂ on methane hydrate formation. In addition, morphological characteristics of hydrates possessed dense powdery particles and ice particles on the surface of the seawater–methane system, which combined with both hydrate morphologies, the pure water–methane system (ice particles), and the saline ions–methane system (powdery particles). The findings of this study may provide a reference for further exploration of methane hydrate formation in cold seep environments and provide a basis for an in-depth understanding of submarine methane release and carbon cycling.</p>","PeriodicalId":35,"journal":{"name":"Energy & Fuels","volume":"38 23","pages":"22864–22875 22864–22875"},"PeriodicalIF":5.2,"publicationDate":"2024-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142843366","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Thermal Management of Adsorption-Based Biogas Upgrading Systems via Incorporation of Phase-Change Materials","authors":"Kyle Newport,&nbsp;Khaled Baamran,&nbsp;Ali A. Rownaghi and Fateme Rezaei*,&nbsp;","doi":"10.1021/acs.energyfuels.4c0308010.1021/acs.energyfuels.4c03080","DOIUrl":"https://doi.org/10.1021/acs.energyfuels.4c03080https://doi.org/10.1021/acs.energyfuels.4c03080","url":null,"abstract":"<p >Thermal management of adsorption columns is necessary to maintain their effectiveness while reducing the energy requirements of the overall separation process. In this work, we aimed at investigating the suitability of blending adsorbents with phase-change materials (PCMs) to adjust the thermal profile of a biogas upgrading column. A commercially available PCM (Nextek 28D) in quantities of 10, 20, and 30 wt % was blended with zeolite 13X in two configurations, namely, traditional pellets and 3D-printed monoliths. The use of different structures allows for better analysis of thermal profiles and assessment of the effectiveness of the PCM in a packed bed adsorption column. Due to low thermal stability, PCM was not mixed directly into the pellets and monoliths; rather, it was incorporated into the adsorption column in the form of mixed-pellet and stacked-monolith structures. Our results indicated that pelletized and stacked-monolith configurations gave rise to different degrees of heat transfer across the column. The pure 13X bed exhibited a maximum temperature of 35.8 °C at a CO₂ capacity of 2.44 mmol/g_13X. In comparison, while the implementation of 20 wt % PCM resulted in only an average temperature drop of 0.35 °C, the CO₂ adsorption capacity was enhanced by 11.8% per gram of 13X for mixed-pellet bed. On the other hand, the stacked-monolith bed required a minimum 20 wt % PCM to become favorable with an average temperature drop of 4.9 °C for an 8.5% increase in CO₂ uptake, but under identical conditions, the mixed-pellet bed was found to outperform the stacked-monolith counterpart. Additionally, simulation results confirmed that the energy balance shift caused by 185 J/g of PCM can be effective to lower the temperature of the column during the adsorption step, thereby improving the separation efficiency. This work highlights the potential of incorporating phase change materials into adsorption column to regulate temperature during adsorption step and increase equilibrium capacity by maintaining favorable thermodynamic conditions.</p>","PeriodicalId":35,"journal":{"name":"Energy & Fuels","volume":"38 23","pages":"22916–22925 22916–22925"},"PeriodicalIF":5.2,"publicationDate":"2024-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142850108","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}